Don't buy a router: download it !
BSD Router Project (BSDRP) is an embedded free and open source router distribution based on FreeBSD with Quagga and Bird.
More information on the Downloads page.
2013-03-21: BSDRP 1.4 released, read the full Release notes for more details
2013-01-14: BSDRP 1.3 released, read the full Release notes for more details
2012-12-20: BSDRP 1.2 released, read the full Release notes for more details
2012-03-01: A short talk about NanoBSD and BSD Router Project (Orange Business Services sponsored)
2012-02-17: BSDRP 1.1 released, read the full Release notes for more details
2011-12-16: Google plus page